Universal valve seating and finishing adapter



Jan. 7, 1964 R. E. RIGGAN ETAL 3,116,571

UNIVERSAL VALVE SEATING AND FINISHING ADAPTER Filed Feb. 12, 1962INVENTORS Ro/a/m E P/jydfi, Z

Gem/d 6. 51 7 United States Patent 3,116,571 UNIVERSAL VALVE SEATING ANDFINISHING ADAPTER Roland E. Riggan, 100 S. th Ave., and Gerald C. Evans,1G4 S. 5th Ave., both of Hopewell, Va. Filed Feb. 12, 1962, Ser. No.172,729 1 Claim. (Cl. 51-29) This invention relates to a tool forfacilitating the grinding of valves for internal combustion engines orthe like.

The primary object of the invention is to provide a tool which isadapted to be arranged in engagement with a valve so that by rotatingthe tool, the valve can be turned or rotated in order to grind the valvein order to insure that the valve will properly engage its seat.

A further object is to provide a valve grinding and seating tool whichincludes a member which is adapted to be made of magnetic material, andwherein the tool of the present invention is adapted to be rotated byengagement with a suitable implement or the like, and wherein the toolhas means thereon for fixedly gripping the head of the valve so as toinsure that the valve will be properly turned as the tool is rotated.

Still another object of the present invention is to provide such a valvegrinding tool that is economical to manufacture and efficient inoperation and which is rugged in structure and foolproof in use.

These and other objects of the invention will become apparent from areading of the following specification and claim, together with theaccompanying drawings, wherein like parts are referred to and indicatedby like reference characters and wherein:

FIGURE 1 is a fragmentary sectional view taken through a portion of acylinder block of an internal combustion engine and showing the tool ofthe present invention arranged in engagement with a head of a valvebeing ground.

FIGURE 2 is a view taken generally on the line 2-2 of FIGURE 1.

FIGURE 3 is a plan view looking down from the opposite end from thatshsown in FIGURE 2.

FIGURE 4 is an enlarged sectional view taken on the line 4- 5 of FIGURE2.

FIGURE 5 is a sectional view illustrating a modification.

Referring in detail to the drawings, and more particu larly to FIGURES 1through 4 of the drawings, the numeral It indicates the valve grindingand seating tool of the present invention which is shown to comprise abody member that is indicated by the numeral 11, and the body member 11is adapted to be of magnetic material, and as shown in FIGURE 1, themember 11 is adapted to engage the head 13 of a valve 12 which is beingground and seated. The valve 12 has its head 13 provided with an arcuateor rounded outer surface or portion 14, and the head 13 further includesa tapered or beveled surface 15 for engagement with a correspondingbeveled or tapered surface 16 in the valve seat 17, and in FIGURE 1 thenumeral 18 indicates a portion of a conventional internal combustionengine such as an internal combustion engine forming part of a vehiclesuch as an automobile or the like. The valve 12 further includes theusual stem 19 which engages and extends through the bushing 29.

As shown in the drawings the body member 11 is provided with a centralopening 21, and the opening 21 communicates with an enlarged counterboreor recess 22, and one end of the body member 11 is provided with alignedslots 23 which have arcuate inner surfaces 24. The numeral 25 designatesspaced apart apertures or openings which are arranged in an end of thebody member I1, and as shown in FIGURE 3, the apertures 25 are arrangedapproximately ninety degrees away from the slots 23. In FIGURE 1 thenumeral 26 indicates a portion of a suitable implement or tool which isadapted to be used for turning or rotating the member 11, and the tool26 may be of the type that includes portions 27 for engaging the slots23, and the tool 26 may also include spaced apart teeth or projectionsfor engaging the apertures 25. The numeral 28 indicates a ball andspring holding device or retainer.

There is provided in the body member 11 a plurality of spaced apartV-shaped recesses or slots 29 which surround the counterbore 22, and theslots 29 are shaped so that portions 30 are of less size than theportions 31, and these slots 31 define therebetween a plurality ofsimilar segments 34 which have arcuate or concave surfaces or endportions 32 and wherein there is defined or provided edge portions orshoulders 33 on the lower ends of the segments 34. The concave surfaces32 are adapted to engage the rounded surfaces 14 of the valve heads 13,as shown in FIGURE 1.

From the foregoing, it is apparent that there has been provided a toolwhich is especially suitable for use in grinding valves as for examplewhen a mechanic desires to clean carbon and grind valves in a servicestation or other locality. The tool It) can be used as part of the handlapping procedure and wherein a suitable grinding compound such as anabrasive paste or emery powder mixed in Vaseline may be placed on thesurface of the valve face and wherein the valve can be oscillated on thevalve seat until the surfaces are properly mated. Light pressure may beused and the compound may be renewed until all the pits and signs ofcorrosion disappear from the seating surface of the valve as indicatedby the numeral 15 and the valve seat 17. This procedure will provide agas-tight valve so as to help prevent leakage of hot gas between thevalve and seat.

The tool It) consists solely of the body member 11 which is suitablymagnetized, and due to this magnetic effect, the member 11 will beretained by magnetic attraction on the head 13 of the valve 12. Then byarranging an implement such as the implement 26 in engagement with themember 11, and by rotating the implement 26, the member 11 can berotated to rotate the valve 12.

The member 11 is shaped to include the cutouts or slots 23 and apertures25 in one end thereof, whereby lugs or projections on the end of theimplement 26 can fit into and engage the slots 23 and apertures 25. Theopposite end of the member 11 is shaped to include the V-shaped slots 29as well as the surfaces 32 on the lower ends of the segments 34, andthese arcuate surfaces 32 are adapted to snugly receive or engage therounded surface 14 of the valve head 13 so as to insure that there willbe a snug and proper fit between the tool 10 and valve head 13. As shownin FIGURE 1 the lower end of the segments 34 are inclined. Thus, notonly are the surfaces 32 shaped to be arcuate, but in addition thesesurfaces 32 are inclined or sloped downwardly in a direction away fromthe counter bore 22, and in order to insure that there is a proper fitor engagement of the tool with the head 13.

The tool can be made of any suitable material and in difierent shapes orsizes.

It will be seen that according to the present invention there has beenprovided a universal valve seating and finishing adapter which can bemade of different sizes, and wherein the member 11 is in the form of amulti-pole magnet, and wherein the apertures or holes 25 and slots 23define drive holes and slots, and the opening 21 is a through hole whichcommunicates with the counterbore 22. The member 11 has the concavesurfaces 32 as well o) as the V-slots 29, and the surfaces 32 definelands for contact on the valve head.

The numeral 33 indicates sharp edges, and the drawings show theapproximate depth of the concave surfaces 32. The provision of thesegments 34 which are magnetized, define a multi-pole magnet, andwherein the magnetic lines of force will provide the maximum drivingeffect, as for example as compared to a solid obstruction, and thus theprovision of the V-shaped slots 29 is important since it defines thesegments 34 which help pro vide the maximum amount of magnetic holdingaction between the tool 10 and the valve head 13.

The implement 26 is preferably detachably connected to the member 11, orelse the implement 26 can be made as an integral or permanent part ofthe magnetic member 11. The member 26 may have a square shank or a roundshank with a square end and may be provided with a spring and ballholding assembly. The member 11 can be made to fit crowned or straightvalves, and the apertures 25 are adapted to receive projections on aconventional reciprocating valve grinding implement. The slots 23 alsoreceive projections on the conventional valve grinding tool implement26. The member 11 is adapted to be made in the form of a permanentmagnet.

Many valves being used at the present time are made without holes orslots to permit driving of the same, and thus such valves depend uponrubber suction cups or the like which are not very satisfactory, and themagnetic member 11 will eliminate the necessity of using suction cupsand wherein the present invention will insure that there will be asecure hold by the member 111 on the valve head.

Due to the provision of the central opening 21 and recess or counterbore22, the present invention can be used with a flex drive such as the flexdrive 26, and wherein the round portion 26A of the rod fits in theopening 21, and the crimped portions 27 lock in the slots 23. FIGURE 1shows the ball and spring holding device 28 for holding the drive member26 against the top of the counterbore 22.

Attention is directed to FIGURE of the drawings wherein there isillustrated a modification which is indicated generally by the numeraland the device 10' includes a body member 11' which has edge portions orshoulders 33 as well as segments 34. The device of FIGURE 5 is adaptedto be used for straight valves wherein the concave surfaces 32 of FIGURE1 are ground strai ht across still maintaining their sharp edges such asthe sharp edges 33.

The tool it) is adapted to be made in several diiferent diameters.

The V-slots 29 need not necessarily be milled since they may be formedin the magnet and ground if necessary. Also, the portions 21, 23, and 25may be formed or finished in a machine shop.

Although the invention herein described is fully capable of achievingthe objects and providing the advantages hereinbefore mentioned, it isto be understood that it is merely illustrative of the presentlypreferred embodiment of the invention, and that it is not to be limitedto the details of construction herein described other than as defined inthe appended claim.

What is claimed is:

In a device of the character described, a body member provided with acentral opening which communicates with an enlarged counterbore, therebeing aligned slots in the upper end of said body member communicatingwith said central opening, there being a pair of spaced apart aperturesin said upper end of said body member and said apertures being arrangedapproximately ninety degrees away from said slots, there being aplurality of spaced apart V-shaped slots terminating at the bottom ofsaid counterbore and in the lower end of the body member, said slotsdefining therebetween a plurality of segments which each have concavelower end portions, said lower end portions adapted to engage thearcuate outer surface or" a valve head which is being ground and seated,and said body member being permanently magnctized.

References Cited in the file of this patent UNITED STATES PATENTS1,564,017 Pewther Dec. 1, 1925 2,561,923 Harmon July 24, 1951 2,619,778Klatt Dec. 2, 1952 2,627,423 Copeman Feb. 3, 1953 2,695,695 Gilfillan etal Nov. 30, 1954

